<!DOCTYPE html>
<html lang="en">
    <head>
        <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no">
        <link href="1.css" rel="stylesheet">
        <meta charset="UTF-8">
        <title>首页</title>
    </head>
    <body>
        <a href="1.html">1</a>
        <a href="练习1.html">2</a>
        <a href="练习2.html">3</a>
        <a href="练习3.html">4</a>

    </body>
</html>